Modified National Early Warning Score 2, a reliable early warning system for predicting treatment outcomes in patients with emphysematous pyelonephritis

Table 1 Grouping of patients based on original National Early Warning Score 2 and its various modifications, n (%)

Original NEWS 2 score
Weighted average risk stratification index	Group 1: Score 0-4 (n = 48)	Group 2: Score 5 and 6 (n = 35)	Group 3: Scores 7-20 (n = 88)				P value
	1.875	1.857	2.44				0.02
Risk stratification index (rounded off)	2	2	2
Need for intervention	33 (68.75)	27 (77.14)	71 (80.68)				< 0.01
Mortality	0	0	8				< 0.01
Group 3, subdivided into two
Weighted average risk stratification index	Group 1: Score 0-4 (n = 48)	Group 2: Score 5 and 6 (n = 35)	Group 3: Scores 7-20 (n = 88)				P value
			Scores 7-14 (n = 76)	Scores 15-20 (n = 12)
	1.875	1.857	2.319	3.75			< 0.01
Risk stratification index (rounded off)	2	2	2	3
Need for intervention	40 (83.33)	27 (77.14)	61 (80.26)	12 (100)			< 0.01
Mortality	0	0	1	7			< 0.01
Group 3, subdivided into three
Risk stratification	Group 1: Score 0-4 (n = 48)	Group 2: Score 5 and 6 (n = 35)	Group 3: Scores 7-10 (n = 55)		Group 4: Scores 11-14 (n = 21)	Group 5: Scores 15-20 (n = 12)	P value
Weighted average risk stratification index	1.875	1.857	1.982		2.762	3.75	< 0.01
Weighted average risk stratification index (rounded off)	2	2	2		3	4
Need for intervention	40 (83.33)	27 (77.14)	44 (80)		17 (80.95)	12 (100)	< 0.01
mortality	0	0	0		1	7	< 0.01
Modified NEWS 2 scoring system
Parameters	Group 1: Score 0-6 (n = 83)	Group 2: Score 7-14: n = 76	Group 3: Score 15-20 (n = 12)				P value
Weighted average Risk stratification index	1.867	2.039	3.75				< 0.01
Risk stratification index (rounded off)	2	2	4
Need for intervention	67 (80.72)	60 (78.95)	12 (100)				< 0.01
mortality	0	1 (1.32)	7 (58.33)				< 0.01

NEWS 2: National Early Warning Score 2.